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Transformers
The core type transformer provides _______
Lesser average length per turn
Much longer magnetic path
Shorter magnetic path
None of the listed here
Lesser average length per turn
Much longer magnetic path
Shorter magnetic path
None of the listed here
Answer
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Related Question
Transformers
We can find _______of the transformer with open circuit test.
Turn ratio
Copper losses
Total equivalent resistance
Total equivalent leakage reactance
Turn ratio
Copper losses
Total equivalent resistance
Total equivalent leakage reactance
Answer
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Transformers
In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary current is
equal to the primary current
one-fourth the primary current
one-fourth the primary current and equal to the primary current
four times the primary current
equal to the primary current
one-fourth the primary current
one-fourth the primary current and equal to the primary current
four times the primary current
Answer
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Transformers
When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is
240 V
120 V
2,400 V
12 V
240 V
120 V
2,400 V
12 V
Answer
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Transformers
The primary and secondary windings are wound on the top of each other in order to reduce ______
Leakage reactance
Iron losses
Copper losses
Winding resistance
Leakage reactance
Iron losses
Copper losses
Winding resistance
Answer
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Transformers
The primary and secondary of a transformer are ______ coupled.
None of the listed here
Magnetically
Electrically
Electrically and magnetically
None of the listed here
Magnetically
Electrically
Electrically and magnetically
Answer
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